Ultrasound probe and ultrasound scanning system

ABSTRACT

An ultrasound probe includes a casing, an ultrasound scanner and a passage. The ultrasound scanner is disposed in the casing. The passage is disposed on the casing and used for transporting an ultrasound conductive medium.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an ultrasound probe and an ultrasoundscanning system, and more particularly, to an ultrasound probe with apassage for transporting the ultrasound conductive medium and anultrasound scanning system in which aforementioned ultrasound probe isapplied.

2. Description of the Prior Art

The ultrasound probe is generally applied in the fields of materials andclinic medical inspection due to the characteristics that the materialstructures and the human cells would not be ruined. Since thepreciseness of the ultrasound is affected by the air, before theinspection is performed via the ultrasound probe, the gel is normallyapplied on the inspected portion so as to facilitate the ultrasoundconduction. Generally speaking, the operator must hold the gel bag,squeeze the gel from the bag, apply the gel on the inspected portion,and then use the ultrasound probe over the inspected portion to performthe ultrasound inspection. If the gel applied on the inspected portionis not enough, or the operator needs to inspect other portion, theoperator will have to hold the gel bag, squeeze the gel from the bag,and apply the gel on the inspected portion again. It not only causestrouble but also decreases the inspection efficiency in theaforementioned way.

SUMMARY OF THE INVENTION

Due to the problems stated in the description of the prior art, onepurpose of the present invention is to provide an ultrasound probe witha passage for transporting the ultrasound conductive medium and anultrasound scanning system in which aforementioned ultrasound probe isapplied

According to one embodiment, an ultrasound probe of this inventioncomprises a casing, an ultrasound scanner and a passage. The ultrasoundscanner is disposed in the casing. The passage is disposed on the casingand used for transporting an ultrasound conductive medium.

According to another embodiment, an ultrasound scanning system of theinvention comprises an ultrasound scanning device, an ultrasound probe,a container and a driving device. The ultrasound probe communicates withthe ultrasound scanning device. The ultrasound probe comprises a casing,an ultrasound scanner and a passage. The ultrasound scanner is disposedin the casing. The passage is disposed on the casing. The container isused for containing an ultrasound conductive medium. The driving deviceis connected between the passage and the container. The driving deviceis used for transporting the ultrasound conductive medium from thecontainer to the passage and squeezing the ultrasound conductive mediumout of the passage.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiment that isillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustrative diagram of an ultrasound probe according to anembodiment of the present invention.

FIG. 2 is an illustrative diagram of an ultrasound scanning system inwhich the ultrasound probe shown in FIG. 1 is applied.

FIG. 3 is an illustrative diagram of an ultrasound probe according toanother embodiment of the present invention.

FIG. 4 is an explosion diagram of part of the components shown in FIG.3.

FIG. 5 is an illustrative diagram of an ultrasound probe according toanother embodiment of the present invention.

FIG. 6 is an illustrative diagram of an ultrasound scanning system inwhich the ultrasound probe shown in FIG. 5 is applied.

FIG. 7 is an illustrative diagram of an ultrasound scanning systemaccording to another embodiment of the present invention.

FIG. 8 is an illustrative diagram of an ultrasound probe according toanother embodiment of the present invention.

FIG. 9 is an illustrative diagram of an ultrasound probe according toanother embodiment of the present invention.

DETAILED DESCRIPTION

Please refer to FIG. 1 and FIG. 2. FIG. 1 is an illustrative diagram ofan ultrasound probe according to an embodiment of the present invention.FIG. 2 is an illustrative diagram of an ultrasound scanning system inwhich the ultrasound probe shown in FIG. 1 is applied. As shown in FIG.2, the ultrasound scanning system 1 comprises an ultrasound scanningdevice 10, an ultrasound probe 12, a container 14 and a driving device16. The ultrasound scanning device 10 can be a computer or otherelectronic device with data calculation, processing and displayfunctions. The ultrasound probe 12 and the ultrasound scanning device 10communicate with each other via a cable 18 so that when the ultrasoundprobe 12 is applied on the inspected portion of a body, the display ofthe ultrasound scanning device 10 can display the corresponding image.

As shown in FIG. 1, the ultrasound probe 12 comprises a casing 120, anultrasound scanner 122 and a passage 124. The ultrasound scanner 122 isdisposed in the casing 120. The passage 124 is disposed on the casing120. Please note that the operation and the structure of the ultrasoundscanner 122 are well known by those of ordinary skill in the art, andtherefore are not explained in details herein. In this embodiment, thepassage 124 and the casing 120 are formed integrally, but are not solimited.

The container 14 is used to contain an ultrasound conductive medium 140,and the ultrasound conductive medium 140 can be water or soft medium,such as transparent gel. The ultrasound conductive medium 140 is tofacilitate the ultrasound conduction. The driving device 16 is connectedbetween the passage 124 of the ultrasound probe 12 and the container 14by the pipes 10 and 22. In this embodiment, the driving device 16 is apump used to transport the ultrasound conductive medium 140 from thecontainer 14 to the passage 124 of the ultrasound probe 12 and then tosqueeze the ultrasound conductive medium 140 out of the passage 124.

As shown in FIG. 2, the ultrasound scanning system further comprises apedal 24, and the pedal 24 is connected to the driving device 16 by asignal line 26 so as to drive the driving device 16 to transport theultrasound conductive medium 140 from the container 14 to the passage124 of the ultrasound probe 12 and then to squeeze the ultrasoundconductive medium 140 out of the passage 124.

Therefore, when the ultrasound inspection is performed by the ultrasoundprobe 12, the operator only needs to put the passage 124 of theultrasound probe 12 closed to the inspected portion of the body and tostep on the pedal 24, the driving device 16 is controlled to transportthe ultrasound conductive medium 140 from the container 14 to thepassage 124 of the ultrasound probe 12 via the pipes 22 and 20, and thento squeeze the ultrasound conductive medium 140 out of the passage 124of the ultrasound probe 12. The ultrasound conductive medium 140squeezed out of the passage 124 can then be applied on the inspectedportion by the casing 120 of the ultrasound probe 12 directly for theultrasound scanning over the inspected portion. When the ultrasoundconductive medium 140 applied on the inspected portion is not enough orwhen the operator wants to check other inspected portion, the operatoronly needs to step on the pedal 24 again, and the driving device 16 iscontrolled to transport the ultrasound conductive medium 140 from thecontainer 14 to the passage 124 of the ultrasound probe 12 via the pipes22 and 20, and then to squeeze the ultrasound conductive medium 140 outof the passage 124 of the ultrasound probe 12 without putting down theultrasound probe. Besides, when the operator steps on the pedal 24 tocontrol the driving device 16, the operator's hand which does not holdthe ultrasound probe 12 can operate or set up the ultrasound scanningdevice 10 upon the operator's need. In this way, it not only is moreconvenient and simple to perform the ultrasound inspection, but alsoincreases the inspection efficiency.

In another embodiment of this invention, the pedal 24 is replaced by acontrol module (not shown). The control module communicates with thedriving device 16 through wire or wireless communication. The operatoroperates the control module to drive the driving device 16 to transportthe ultrasound conductive medium 140 from the container 14 to thepassage 124 of the ultrasound probe 12 and then to squeeze theultrasound conductive medium 140 out of the passage 124. In thisembodiment, a rapid connector 28 is disposed in the front end of thepipe 20 as shown in FIG. 1. Through the rapid connector 28, the pipe 20can be rapidly connected to and easily detached from the passage 124 ofthe ultrasound probe 12.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is an illustrative diagram ofan ultrasound probe according to another embodiment of the presentinvention. FIG. 4 is an explosion diagram of part of the componentsshown in FIG. 3. The differences between the ultrasound probe 32 and theaforementioned ultrasound probe 12 are that the ultrasound probe furthercomprises a connection mechanism 320, that the connection mechanism 320comprises a base 322 detachedly connected to the casing 120, and thatthe passage 124 and the base 322 are formed integrally. As shown in FIG.3 and FIG. 4, the casing 120 has two slots 126, and the connectionmechanism 320 further comprises two stuck members 324, two hinges 326,two torsion springs 328 and two latches 330. Due to the viewing angle,FIG. 3 and FIG. 4 show only the slot 126 on one side of the casing 120as well as the hinge 326, the torsion spring 328 and the lath 330 on oneside of the base 322. The stuck members 324 are hinged with the base 322by the hinges 326. The torsion springs 328 are disposed on the hinges326, and contact the base 322 and the stuck members 324, respectively.After the stuck members 324, the hinges 326 and the torsion springs 328are assembled with the base 322, the latches 330 can pass through thefixing holes 332 of the hinges 326 to fix the assembly.

In this embodiment, the operator can press the casing 120 of theultrasound probe 120 toward the base 322,so that the two stuck members324 rotate apart from each other. At this time, the torsion springs 328are twisted. When the casing 120 is press downward to the end, thetorsion springs 328 generate torsion force to have the stuck members 324return to where the stuck members 324 are originally disposed, so thatthe stuck members 324 are stuck with the slots 126 of the casing. Inthis way, the base 322 are connected to the casing 120 to have thepassage 124 be disposed on the casing 120 via the base 322. When theoperator desires to detach the base 322 from the casing 120, theoperator simply presses the end of the stuck members 324, and the stuckmembers 324 then rotate to be released from the slots 126 of the casing120. When the stuck members 324 are pressed, the torsion springs 328 aretwisted. When the stuck members 324 are released, the torsion spring 328generate torsion force to have the stuck members 324 return to where thestuck members 324 are originally disposed. As shown in FIG. 4, the base322 comprises two stoppers 224 to limit rotation of the stuck members324 in a predetermined range.

In addition, as shown in FIG. 3, the connection mechanism 320 furthercomprises an elastic member 336 disposed on the base 322. When the base322 is connected to the casing 120, the elastic member 336 is clampedbetween the casing 120 and the base 322. In this way, shake of the base322 and the casing 120 due to the mechanical tolerance can be avoided.In this embodiment, the elastic member 336 may be a rubber pad or asponge pad, but is not so limited.

Please note that the base 322 may be detachedly disposed on the casing120 by magnetism or screwing instead of aforementioned stuck members 324and slots 126. For example, two magnets may be disposed on the base 322and the casing 120, respectively; or the base 322 and the casing 120have corresponding screw holes, and one screw passes through the screwholes of the base 322 and the casing 120 for fixing. Please not that thecomponents shown in FIG. 3 and FIG. 4 with the same labeling numbers asthose shown in FIG. 1 and FIG. 2 operate in substantially the same wayand are not repeatedly described in details herein.

Please refer to FIG. 5 and FIG. 6. FIG. 5 is an illustrative diagram ofan ultrasound probe according to another embodiment of the presentinvention. FIG. 6 is an illustrative diagram of an ultrasound scanningsystem in which the ultrasound probe shown in FIG. 5 is applied. Thedifferences between the ultrasound probe 42 and the aforementionedultrasound probe 12 are that the ultrasound probe 43 further comprises aconnection mechanism 420, that the connection mechanism 420 comprises abase 422 detachedly connected to the casing 120 and that the passage 124and the base 422 are formed integrally. As shown in FIG. 5, the base 433is ring-shaped hollow. Besides, the connection mechanism 420 furthercomprises a ring-shaped hollow air bag 424 disposed in the base 422. Asshown in FIG. 6, the driving device 46 of the ultrasound probe 42comprises a first pump 460 and a second pump 462. The first pump 460 isconnected to the passage 124 and the container 14 by the pipes 20 and22. The second pump 462 is connected to the ring-shaped hollow air bag424 by the pipe 23. In this embodiment, the first pump 460 is used totransport the ultrasound conductive medium 140 from the container 14 tothe passage 124 and then to squeeze the ultrasound conductive medium 140out of the passage 124. The second pump 462 is used to activate airinflation or leakage of the ring-shaped hollow air bag.

In this embodiment, the operator can have the casing 120 of theultrasound probe 42 pass through and be surrounded by the ring-shapedhollow air bag 424, and then drives the second pump 462 to activate airinflation of the ring-shaped hollow air bag 424. After the casing 120 ofthe ultrasound probe 42 is surrounded by the ring-shaped hollow air bag424 and the ring-shaped hollow air bag 424 is full of air, the casing120 is clamped in the base 422 by the ring-shaped hollow air bag 424 sothat the passage 124 is disposed on the casing 120 by the base 422. Inthis embodiment, the connection mechanism 420 further comprises twoelastic members 426 disposed on the inner sides of the top and bottomsurfaces of the ring-shaped hollow air bag 424. After the casing 120passes through and is then surrounded by the ring-shaped hollow air bag424 and the ring-shaped hollow air bag 424 is full of air, the elasticmembers 426 contact the casing 120 so as to have the casing 120 betightly clamped by the ring-shaped hollow air bag 424. Please not thatthe components shown in FIG. 5 and FIG. 6 with the same labeling numbersas those shown in FIG. 1 and FIG. 2 operate in substantially the sameway and are not repeatedly described in details herein.

Please refer to FIG. 7. FIG. 7 is an illustrative diagram of anultrasound scanning system 5 according to another embodiment of thepresent invention. The differences between the ultrasound scanningsystem 5 and aforementioned ultrasound scanning system 4 are that in theultrasound scanning system 5 the passage 124, the container 14 and thering-shaped hollow air bag 424 are connected to the single drivingdevice 56 by the pipes 20, 22 and 23. In other words, in the inventionit is able to use a single driving device 56 to transport the ultrasoundconductive medium 140 from the container 14 to the passage 124 throughthe pipes 22and 20, and to activate air inflation or leakage of thering-shaped hollow air bag through the pipe 23. In addition, in theultrasound scanning system 5 the control module 50 is used tocommunicate with the driving device 56 via wire or wirelesscommunication so that the operator operates the control module 50 todrive the driving device 56 to transport the ultrasound conductivemedium 140 from the container 14 to the passage 124 through the pipes 22and 20, and to activate air inflation or leakage of the ring-shapedhollow air bag 424 through the pipe 23. Please not that the componentsshown in FIG. 7 with the same labeling numbers as those shown in FIG. 6operate in substantially the same way and are not repeatedly describedin details herein.

Please refer to FIG. 8. FIG. 8 is an illustrative diagram of anultrasound probe according to another embodiment of the presentinvention. The differences between the ultrasound probe 62 and theultrasound probe 12 are that the ultrasound probe 62 further comprises aconnection mechanism 620, that the connection mechanism 620 comprises abase 622 detachedly connected to the casing 120, and that the passage124 and the base 622 are formed integrally. As shown in FIG. 8, the base622 is ring-shaped hollow. Besides, the connection mechanism 620 furthercomprises a ring-shaped hollow elastic member 624 disposed in the base622. In this embodiment, the ring-shaped hollow elastic member 624 ismade of rubber or sponge, but is not so limited. In this way, the casing120 passes through and is then surrounded by the ring-shaped hollowelastic member 624 so as to have the casing 120 be clamped in the base622 by the ring-shaped hollow elastic member 624. Please not that thecomponents shown in FIG. 8 with the same labeling numbers as those shownin FIG. 1 operate in substantially the same way and are not repeatedlydescribed in details herein.

Please refer to FIG. 9. FIG. 9 is an illustrative diagram of anultrasound probe according to another embodiment of the presentinvention. The differences between the ultrasound probe 72 and theultrasound probe 12 are that the ultrasound probe 72 further comprises aconnection mechanism 720, that the connection mechanism 720 comprises abase 722 detachedly connected to the casing 120, and that the passage124 and the base 722 are formed integrally. As shown in FIG. 9, the base722 comprises a top cover 7220 and a bottom cover 7222. One end of thetop cover 7220 is hinged with the bottom cover 7222, and the other endof the top cover 7220 is selectively stuck with or released from thebottom cover 7222. In this embodiment, the passage 124 is formed on thebottom cover 7222, but is not so limited. A stuck member 7224 isdisposed on the top cover 7220 and a slot 7226 is formed on the bottom7226 so that the stuck member 7224 is selectively stuck with or releasedfrom the slot 7226. In addition, the connection mechanism 720 furthercomprises two elastic members 724 disposed on the inner side of the topcover 7220 and on the inner side of the bottom cover 7222, respectively.When the casing 120 is disposed between the top cover 7220 and thebottom cover 7222 and the stuck member 7224 of the top cover 7220 isstuck with the slot 7226 of the bottom cover 7222, the casing 120 isclamped between the top cover 7220 and the bottom cover 7222 by the twoelastic members 724. In this way, the casing 120 is tightly held in thebase 722 and shake of the base 722 and the casing 120 due to themechanical tolerance can be avoided. In this embodiment, the elasticmembers 724 may be rubber pads or sponge pads, but are not so limited.When the operator desires to detach the base 722 from the casing 120,the operator simply has the stuck member 7224 of the top cover 7220 bereleased from the slot 7226 of the bottom cover 7222 and then rotatesthe top cover 7220 relatively to the bottom cover 7222, the casing isout of the base 722. Please not that the components shown in FIG. 9 withthe same labeling numbers as those shown in FIG. 1 operate insubstantially the same way and are not repeatedly described in detailsherein.

As described above, in this invention the passage used for transportingthe ultrasound conductive medium is disposed on the casing of theultrasound probe. Both the passage and the container which contains theultrasound conductive medium are connected to the driving device. Whenthe operator performs the ultrasound inspection by the ultrasound probe,the operator simply puts the passage of the ultrasound probe closed tothe inspected portion of the body and operates the driving device totransport the ultrasound conductive medium from the container to thepassage and then to squeeze the ultrasound conductive medium out of thepassage. The ultrasound conductive medium squeezed out of the passagecan then be applied on the inspected portion by the casing of theultrasound probe directly for the ultrasound scanning over the inspectedportion. When the ultrasound conductive medium applied on the inspectedportion is not enough or when the operator wants to check otherinspected portion, the operator only needs to operate the driving deviceagain to transport the ultrasound conductive medium from the containerto the passage and then to squeeze the ultrasound conductive medium outof the passage without putting down the ultrasound probe. For example, apedal is connected to the driving device. When the operator steps on thepedal to control the driving device, the operator's hand which does nothold the ultrasound probe can operate or set up the ultrasound scanningdevice upon the operator's need. In this way, it not only is moreconvenient and simple to perform the ultrasound inspection, but alsoincreases the inspection efficiency.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the invention.

What is claimed is:
 1. An ultrasound probe comprising: A casing; Anultrasound scanner, disposed in the casing; and A passage, disposed onthe casing and used for transporting an ultrasound conductive medium. 2.The ultrasound probe of claim 1, wherein the passage and the casing areformed integrally.
 3. The ultrasound probe of claim 1, furthercomprising a connection mechanism, the connection mechanism comprising abase detachably connected to the casing, and the passage and the basebeing formed integrally.
 4. The ultrasound probe of claim 3, wherein thecasing has a slot, the connection mechanism further comprises a stuckmember, a hinge and a torsion spring, the stuck member is hinged withthe based via the hinge, the torsion spring is disposed on the hinge andcontacts the base and the stuck member, respectively, when the base isconnected to the casing, the stuck member is stuck with the slot, whenthe stuck member is pressed, the stuck member is released from the slotand the torsion spring is twisted, and when the stuck member isreleased, the torsion spring generates a torsion force to have the stuckmember return to where the stuck member is originally disposed.
 5. Theultrasound probe of claim 4, wherein the base comprises a stopper usedto limit rotation of the stock member.
 6. The ultrasound probe of claim3, wherein the connection mechanism further comprises an elastic memberdisposed on the base, when the base is connected to the casing, theelastic member is clamped between the casing and the base.
 7. Theultrasound probe of claim 3, wherein the base is detachably disposed onthe casing by magnetism or screwing.
 8. The ultrasound probe of claim 3,wherein the based is ring-shaped hollow, the connection mechanismfurther comprises a ring-shaped hollow air bag disposed in the base,after the casing passes through and is then surrounded by thering-shaped hollow air bag and the ring-shaped hollow air bag is full ofair, the casing is clamped in the base by the ring-shaped hollow airbag.
 9. The ultrasound probe of claim 8, wherein the connectionmechanism further comprises an elastic member disposed in an inner sideof the ring-shaped hollow air bag, after the casing passes through andis then surrounded by the ring-shaped hollow air bag and the ring-shapedhollow air bag is full of air, the elastic member contacts the casing.10. The ultrasound probe of claim 3, wherein the base is ring-shapedhollow, the connection mechanism further comprises a ring-shaped hollowelastic member disposed in the base, and the casing passes through andis then surrounded by the ring-shaped hollow elastic member so as tohave the casing be clamped in the base by the ring-shaped hollow elasticmember.
 11. The ultrasound probe of claim 3, wherein the base comprisesa top cover and a bottom cover, one end of the top cover is hinged withthe bottom cover, the other end of the top cover is selectively stuckwith or released from the bottom cover, the connection mechanism furthercomprises two elastic members disposed on an inner side of the top coverand an inner side of the bottom cover, respectively, when the casing isdisposed between the top cover and the bottom cover and the top cover isstuck with the bottom cover, the casing is clamped between the top coverand the bottom cover by the two elastic members.
 12. An ultrasoundscanning system comprising: An ultrasound scanning device; An ultrasoundprobe, communicated with the ultrasound scanning device, the ultrasoundprobe comprising: A casing; An ultrasound scanner, disposed in thecasing; and A passage, disposed on the casing; A container used forcontaining an ultrasound conductive medium; and A driving device,connected between the passage and the container, used for transportingthe ultrasound conductive medium from the container to the passage andsqueezing the ultrasound conductive medium out of the passage.
 13. Theultrasound scanning system of claim 12, wherein the passage and thecasing are formed integrally.
 14. The ultrasound scanning system ofclaim 12, wherein the ultrasound probe further comprises a connectionmechanism, the connection mechanism comprises a base detachablyconnected to the casing, and the passage and the base are formedintegrally.
 15. The ultrasound scanning system of claim 14, wherein thecasing has a slot, the connection mechanism further comprises a stuckmember, a hinge and a torsion spring, the stuck member is hinged withthe based via the hinge, the torsion spring is disposed on the hinge andcontacts the base and the stuck member, respectively, when the base isconnected to the casing, the stuck member is stuck with the slot, whenthe stuck member is pressed, the stuck member is released from the slotand the torsion spring is twisted, and when the stuck member isreleased, the torsion spring generates a torsion force to have the stuckmember return to where the stuck member is originally disposed.
 16. Theultrasound scanning system of claim 15, wherein the base comprises astopper used to limit rotation of the stock member.
 17. The ultrasoundscanning system of claim 14, wherein the connection mechanism furthercomprises an elastic member disposed on the base, when the base isconnected to the casing, the elastic member is clamped between thecasing and the base.
 18. The ultrasound scanning system of claim 14,wherein the base is detachably disposed on the casing by magnetism orscrewing.
 19. The ultrasound scanning system of claim 14, wherein thebased is ring-shaped hollow, the connection mechanism further comprisesa ring-shaped hollow air bag disposed in the base, the driving device isconnected to the ring-shaped hollow air bag and used to activate airinflation or leakage of the ring-shaped hollow air bag, after the casingpasses through and is then surrounded by the ring-shaped hollow air bagand the ring-shaped hollow air bag is full of air, the casing is clampedin the base by the ring-shaped hollow air bag.
 20. The ultrasoundscanning system of claim 19, wherein the driving device comprises afirst pump and a second pump, the first pump is connected to the passageand the container for transporting the ultrasound conductive medium fromthe container to the passage and squeezing the ultrasound conductivemedium out of the passage, and the second pump is connected to thering-shaped hollow air bag to activate air inflation or leakage of thering-shaped hollow air bag.
 21. The ultrasound scanning system of claim19, wherein the connection mechanism further comprises an elastic memberdisposed in an inner side of the ring-shaped hollow air bag, after thecasing passes through and is then surrounded by the ring-shaped hollowair bag and the ring-shaped hollow air bag is full of air, the elasticmember contacts the casing.
 22. The ultrasound scanning system of claim14, wherein the base is ring-shaped hollow, the connection mechanismfurther comprises a ring-shaped hollow elastic member disposed in thebase, and the casing passes through and is then surrounded by thering-shaped hollow elastic member so as to have the casing be clamped inthe base by the ring-shaped hollow elastic member.
 23. The ultrasoundscanning system of claim 14, wherein the base comprises a top cover anda bottom cover, one end of the top cover is hinged with the bottomcover, the other end of the top cover is selectively stuck with orreleased from the bottom cover, the connection mechanism furthercomprises two elastic members disposed on an inner side of the top coverand an inner side of the bottom cover, respectively, when the casing isdisposed between the top cover and the bottom cover and the top cover isstuck with the bottom cover, the casing is clamped between the top coverand the bottom cover by the two elastic members.